222333 và 333222
Ta có: 222333 = 2223.111 = ( 2223 ) 111 = 10 941 048111
333222 = 3332.111 = ( 3332)111 = 110 889111
vì 10 941 048 > 110 889 => 10 941 048111 > 110 889111
hay: 222333 > 333222
vậy: 222333 > 333222
Ta có:
\(222^{333}=\left(111.2\right)^{333}=111^{333}.2^{333}=111^{333}.\left(2^3\right)^{111}=111^{333}.8^{111}
\)
\(=111^{222}.111^{111}.8^{111}=111^{222}.888^{111}\)
\(333^{222}=\left(111.3\right)^{222}=111^{222}.3^{222}=111^{222}.\left(3^2\right)^{111}=111^{222}.9^{111}\)
Vì \(888^{111}>9^{111}\)(do 888>9)
\(=>111^{222}.888^{111}>111^{222}.9^{111}\)
\(=>222^{333}>333^{222}\)
Vậy \(222^{333}>333^{222}\)
Vì